title: [Effectivity of the occlusive pessary].
mesh_terms: D003270:Contraceptive Agents; D008297:Male; D010570:Pessaries; D013094:Spermatozoa
chemical_list: D003270:Contraceptive Agents
keywords: CONTRACEPTIVES; SPERMATOZOA
vernacular_title: Ocklusivpessarets effektivitet.